- Simple Adjustable Voltage Source
- Low Voltage, High Current Time Delay Circuit
- LM317T Voltage Regulator with Pass Transistor
- Interfacing 5 volt CMOS to 12 volt/ 25 Watt Loads
- High Current Regulated Supply by LM317
- High Current Power Regulator 12Volt 30Amp by 7812+2N3055
- CMOS Toggle Flip Flop Using Push Button
- 9 Second LED Timer and Relay Circuit
- 9 Second Digital Readout Countdown Timer
- 3 Transistor Audio Amp (50 milliwatt)
- Thermistor
- 2 Cell Lithium Ion Charger
- Battery Check procedures
- Salt Water Battery
- Simple but reliable car battery tester
- Nite Rider Lights
- 12V to +-20V converter (for audio amplifier)
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